Aroma diffuser



FIG. 1 is a front perspective view of an aroma diffuser,

FIG. 2 is a rear perspective view thereof,

FIG. 3 is a top plan view of thereof,

FIG. 4 is a bottom plan view thereof,

FIG. 5 is a front view thereof,

FIG. 6 is a rear view thereof,

FIG. 7 is a right side view thereof; and,

FIG. 8 is a left side view thereof. 

I claim, the ornamental design for an aroma diffuser, as shown and described. 